target/linux/brcm47xx/patches-2.6.25/710-add-gpio-is-valid.patch

   1 Add gpio_is_valid() for bcm47xx
   2 --- a/arch/mips/bcm47xx/gpio.c
   3 +++ b/arch/mips/bcm47xx/gpio.c
   4 @@ -77,3 +77,15 @@
   5  }
   6  EXPORT_SYMBOL_GPL(bcm47xx_gpio_direction_output);
   7
   8 +int bcm47xx_gpio_is_valid(int gpio)
   9 +{
  10 +       if (ssb_bcm47xx.chipco.dev) {
  11 +               if (gpio >= 0 && gpio < BCM47XX_CHIPCO_GPIO_LINES)
  12 +                       return 1;
  13 +       } else if (ssb_bcm47xx.extif.dev) {
  14 +               if (gpio >= 0 && gpio < BCM47XX_EXTIF_GPIO_LINES)
  15 +                       return 1;
  16 +       }
  17 +       return 0;
  18 +}
  19 +EXPORT_SYMBOL_GPL(bcm47xx_gpio_is_valid);
  20 --- a/include/asm-mips/mach-bcm47xx/gpio.h
  21 +++ b/include/asm-mips/mach-bcm47xx/gpio.h
  22 @@ -17,6 +17,7 @@
  23  extern void bcm47xx_gpio_set_value(unsigned gpio, int value);
  24  extern int bcm47xx_gpio_direction_input(unsigned gpio);
  25  extern int bcm47xx_gpio_direction_output(unsigned gpio, int value);
  26 +extern int bcm47xx_gpio_is_valid(int gpio);
  27
  28  static inline int gpio_request(unsigned gpio, const char *label)
  29  {
  30 @@ -52,6 +53,8 @@
  31         return bcm47xx_gpio_direction_output(gpio, value);
  32  }
  33
  34 +#define gpio_is_valid  bcm47xx_gpio_is_valid
  35 +
  36
  37  /* cansleep wrappers */
  38  #include <asm-generic/gpio.h>